According to Warner Music Japan, FANMAIL by TLC has sold 10,000,000 copies worldwide. The album sold best in United States (6,000,000 copies), Japan (1,000,000 copies) and Canada (400,000 copies).
FANMAIL certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Australia |
70,000 | 1x Platinum | OCTOBER 1999 |
Australia Sales: 70,000
Certification / note: 1x Platinum
Certification Date / sales as of: OCTOBER 1999
|
 Belgium |
25,000 | 1x Gold |
Belgium Sales: 25,000
Certification / note: 1x Gold
Certification Date / sales as of:
|
|
 Canada |
400,000 | 4x Platinum | 1999 |
Canada Sales: 400,000
Certification / note: 4x Platinum
Certification Date / sales as of: 1999
|
 France |
100,000 | 1x Gold | 1999 |
France Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 1999
|
 Japan |
1,000,000 | 1 Million | November 2002 |
Japan Sales: 1,000,000
Certification / note: 1 Million
Certification Date / sales as of: November 2002
|
 Korea |
66,575 | RIAK / Gaon charts |
Korea Sales: 66,575
Certification / note: RIAK / Gaon charts
Certification Date / sales as of:
|
|
 Netherlands |
80,000 | 1x Platinum | 2000 |
Netherlands Sales: 80,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2000
|
 New Zealand |
15,000 | 1x Platinum |
New Zealand Sales: 15,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
 Switzerland |
25,000 | 1x Gold | 1999 |
Switzerland Sales: 25,000
Certification / note: 1x Gold
Certification Date / sales as of: 1999
|
 United Kingdom |
300,000 | 1x Platinum | 24 September, 1999 |
United Kingdom Sales: 300,000
Certification / note: 1x Platinum
Certification Date / sales as of: 24 September, 1999
|
 United States |
6,000,000 | 6x Platinum | 21 June, 2000 |
United States Sales: 6,000,000
Certification / note: 6x Platinum
Certification Date / sales as of: 21 June, 2000
|
 Europe (IFPI) |
1,000,000 | 1x Platinum | 1999 |
Europe (IFPI) Sales: 1,000,000
Certification / note: 1x Platinum
Certification Date / sales as of: 1999
|
| Worldwide sales | 10,000,000 | Warner Music Japan |
Total
Sales: 10,000,000
Source: Warner Music Japan
|
Year-end chart performance for FANMAIL
| Chart 1999 | Rank | Sales |
| Australian Albums (ARIA) |
47 | >70,000 |
| Belgian Albums (Ultratop Flanders) |
30 | |
| Belgian Albums (Ultratop Wallonia) |
53 | |
| Canadian Albums (RPM) |
9 | |
 Danish Albums (Hitlisten) |
100 | |
| Dutch Albums (Album Top 100) |
31 | |
 European Albums (Music & Media) |
24 | |
| French Albums (SNEP) |
65 | |
 German Albums (Offizielle Top 100) |
19 | |
| Japanese Albums (Oricon) |
58 | 480,540 |
| New Zealand Albums (RMNZ) |
21 | |
 Swedish Albums (Sverigetopplistan) |
64 | |
| Swiss Albums (Schweizer Hitparade) |
48 | |
| UK Albums |
37 | 400,000 |
| US Albums (Billboard 200) |
10 | |
| US Albums (Soundscan) |
8 | 4,200,000 |
| Chart 2000 | Rank | Sales |
| US Albums (Billboard 200) |
147 |