PyRank
cole

aiosmtplib

asyncio smtplib implementation
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

aiosmtplib has 19.1M monthly downloads and 428 GitHub stars. Version 5.1.2 supports Python 3.10+, first published in 2016.

It is actively maintained under a permissive license, last released in Jun 2026.

It is used by 177 tracked packages, including apache-airflow-providers-smtp, fastapi-mail and supertokens-python.

GitHub topics include asyncio, smtp-protocol and smtplib.

Downloads
Day
628.1K
Week
4.4M
Month
19.1M
Stars
428
Forks
56
Issues
7
Version
5.1.2

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
90
Popularity
54
Adoption
70
Community
50
Provenance
0
How the maintenance status was determined
Last commit
17 days ago
Monthly downloads
19,100,089
• Active
Activity within 30 days
Stable
Activity within 31-180 days
Minimal
Activity within 181-365 days, or no activity data
At Risk
No activity for > 365 days, but > 10,000 monthly downloads
Archived
Repository flagged as archived on GitHub
How the popularity category was determined
Monthly downloads
19,100,089
Stars
428
Stars per 1k downloads
0.02
• Industry Standard
> 10,000,000 monthly downloads
Hidden Gem
< 0.5 stars per 1k downloads and > 100,000 monthly downloads
Community Favorite
> 5 stars per 1k downloads
Rising Star
Balanced ratio of stars to downloads
Unknown
Fewer than 1,000 monthly downloads, or no star data
How download momentum is calculated
Week daily avg
626,985
Month daily avg
636,670
Momentum
-1.5%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
>=3.10
Cutting Edge
Minimum supported version is 3.12 or newer
• Modern
Minimum supported version is 3.9, 3.10, or 3.11
Legacy
Supports 3.8 or older (or Python 2)
Unknown
No requires_python specified or unparseable
License categories
License
MIT
• Permissive
MIT, Apache, BSD, ISC, Unlicense, CC0, etc.
Copyleft
GPL, LGPL, AGPL, MPL, EPL, etc.
Proprietary
Commercial, all rights reserved, custom EULAs
Unknown
No license specified, or none of the above match
How the release cadence was determined
Last release
17 days ago
Total releases
40
Releases/year
3.9
Rapid
Last release within 365 days and > 12 releases/year
• Regular
Last release within 365 days
Slow
Last release 366-730 days ago
Stalled
Last release > 730 days ago, or no releases
Unknown
No usable release date available
How contributor risk was determined
Contributors
27
Monthly downloads
19,100,089
High Load
≤ 2 contributors and ≥ 50,000 monthly downloads
Moderate Load
< 10 contributors and ≥ 500,000 monthly downloads
Low Load
< 25 contributors and ≥ 5,000,000 monthly downloads, or sole maintainer with ≥ 10,000 monthly downloads
• Balanced
Enough contributors for the package's popularity
Unknown
No contributor data available
Engagement
47
 
Issue Burden
16.4
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
48.2%
contrib / forks
Stale Release
No
 
PR Velocity
Quiet
 

Weekly Downloads

GitHub Stars

Not all downloads include detailed metadata. Breakdowns reflect the subset that does.

Downloads by OS

Linux 474.7K
macOS 1.9K
Windows 1.6K

Python Versions

3.10
27.9% 132.1K
3.12
26.2% 124.2K
3.11
20.9% 98.8K
3.13
14.8% 69.9K
3.14
10.2% 48.4K

Top Countries

1. US US
411.3K
2. IN IN
14.2K
3. IE IE
11.4K
4. DE DE
9.8K
5. GB GB
2.6K
6. CA CA
2.5K
7. FR FR
2.4K
8. NL NL
2.2K
9. SG SG
1.8K
10. TH TH
1.7K
GitHub Topics
Tags from the package's GitHub repository describing what it does.

Package Information

License
MIT
First Release
April 19, 2016
Last Release
2 weeks ago
Last Commit
2 weeks ago
Latest Version
5.1.2
Total Releases
40
Contributors
27
Open PRs
2
Archived
No
Wheels
py3
Keywords
asyncio email smtp
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links