File Drop: Limit in Attachments for Popular Email Providers
The recognition of emails as a valuable communication tool would have not been established had Ray Tomlinson not conceptualized the process of transmitting emails across diverse computers via ARPANET, the precursor to the internet. This pioneering advancement was developed under the oversight of the US Defense Advanced Research Agency (DARPA). Tomlinson also introduced the iconic “@” symbol, which facilitated targeting messages to specific users on designated machines. Today, emails are now extensively utilized not just for communication, but also for managing log-ins and accounts across multiple platforms. Individuals must possess email addresses, the identifier for their email boxes to establish identities in digital spaces where they wish to participate.
Email also stands tall as the premier choice for communication in workplaces. As reported in an article the average worker receives a staggering influx of 121 emails daily.
The formality and professionalism in email communication make it well-suitable for workplaces, business proposals, and client interactions. However, with the demands in the digital era, emails proved limitations in file sharing. The importance of file sharing in fostering collaboration and engaging external partners prompted the creation of file drop services, also known as file sharing services. These innovative platforms were designed with the explicit purpose of facilitating the seamless sharing of sizable files, including high-resolution images, videos, intricate design files, and more.
Most email providers impose restrictions on attachments, often with specified maximum file size limits. Further, there may be limits on the number of attachments allowed, and certain file types might be prohibited altogether. In response to these challenges and the pursuit of uninterrupted collaborations, drop files services have emerged as an alternative to emails for efficient file sharing.
Why Emails Have Size Limits

Email delivery services come with their distinct threshold for email sizes. Yet, it is essential to note that the universal benchmark doesn’t exist; these limitations are primarily established based on performance and security considerations. When crafting emails keep in mind certain factors such as the maximum size of file attachments and the HTML part of the prevalent email client among your recipients. Further, there are subtle variables that impact the actual size and deliverability.
Email size limits exist due to the following:
Performance
Email systems are not optimized for the transfer of substantial volumes of data. Their functionality revolves around the utilization of SMTP, which is an outdated protocol. The majority of systems cannot efficiently handle the simultaneous processing of data streams. Further, the scrutiny carried out by mail transfer agents to detect viruses and potential risks in incoming data also costumes resources and consequently impacts the overall system performance.
Database
Email data requires storage on a server, whether it’s hosted or kept locally. As a result, limitations apply not only to individual messages but also extend to encompass the entirety of the inbox.
Security
Email systems and databases may also have potential vulnerabilities. Email systems typically employ a restricted set of ports for data retrieval. This characteristic renders them susceptible to possible DoS attacks, wherein an overwhelming influx of large messages has the potential to shut the entire system. This form of attack is also referred to as an “email bomb”.
Attachment Limits for Email Provider Giants

Given the reasons outlined above, email providers are obligated to enforce attachment limits. Here are the limits established by several prominent email service providers to provide you with an understanding of the permissible attachment sizes associated with your account:
Gmail
This widely used email service by Google only allows attachments up to 25MB in size.
Outlook (formerly Hotmail)
Microsoft’s Outlook permits attachments of up to 20MB.
Apple Mail
The default email client for macOS and iOs devices allows attachments of up to 20MB for outgoing messages.
AOL Mail
AOL Mail sets its attachment limit to 25MB.
Proton Mail
Protoin Mail, a private email service known for its zero-access encryption, limits attachment to 25MB for paid users and 5MB for free users.
Zoho Mail
Zoho offers a maximum attachment size of 20MB.
Mozilla Thunderbird
Thunderbird does not have any strict attachment limits, however, the recipient’s email provider may impose restrictions. As a guideline, it is advisable to keep attachments below 25MB.
It is important to note that these attachments may shift over time as email providers evolve and adapt to user needs. When dealing with large files, it’s often more efficient to use cloud storage services provided by the same companies or third-party options, ensuring a seamless experience for drop file sharing.
Cloud Storage Services and How They Are Revolutionizing the File-Sharing Culture

Cloud storage is a mode of computer data storage in which digital information is kept on servers located on external sites. These servers are maintained by a third-party company, responsible for the hosting, managing, and securing of data stored on its infrastructure. The service provider ensures continuous data availability through both public and private internet connections.
Utilizing cloud storage enables businesses to store and send large files without the necessity of maintaining their own data centers. This transition results in cost savings by shifting from a purchasing approach to a utilization-based one. Additionally, cloud storage offers scalability, providing organizations with the adaptability to increase or decrease their data storage capacity according to their unique needs.
Unlike emails, cloud storage services allow for larger sizes compared to email attachments. This makes it feasible to send a large file that exceeds email attachment size restrictions.
Enhancing Team Collaborations with Cloud Storage Services
As remote work is here to say in the post-COVID-19 era, embracing flexible work arrangements is now a permanent fixture. Utilizing cloud storage services is an excellent approach to ensure your team’s communication and collaboration stay high.
Cloud services allow file drops, and usher in a new era of teamwork by facilitating seamless file exchanges, enabling collaboration across diverse geographical locations and time zones. They offer swift and controlled file sharing, empowering teams to instantly disseminate documents, presentations, and data to the entire group or specific individuals. Furthermore, multiple team members can collaboratively work on a single file in real-time, expediting decision-making and refining content Reliance on extensive email chains is also reduced as conversations and file-related interactions are consolidated within the cloud platform, enhancing communication processes.
An additional advantage lies in the reduction of reliance on extensive email chains, as conversations and file-related interactions are consolidated within the cloud platform, simplifying communication processes.
Effortless File Sharing with Drop Send’s Single Click Solution

Prepared to implement cloud services within your team? Introducing DropSend: a solution that empowers you to store files and generate shareable folders accessible from any location. This capability ensures your team’s access to shared files and folders, keeping everyone up-to-date.
Drop Send facilitates seamless collaboration for teams aiming to share and forward creative projects. It permits effortless collaboration from individuals anywhere, allowing them to request file uploads without the necessity of possessing an account.
Enhanced collaboration translates to heightened productivity. Elevate your team’s brainstorming sessions and knowledge exchange with DropSend, the file sharing platform that propels you toward your objectives.

